World of Tharyg: the Sionilli Peninsula
This massive tunnel through Black Gem Mountain connects East Central Sionilli to the Aspear Coast. It also is a direct connection to the Underdark. The Drow, who are universally feared in Sionilli, generally reside here; along with their slave race the Drueregar. The small villages and communities in the area are raided and attacked with regularity; only the intervention of the Aeroven and their contingent of the Royal Legion prevent complete anarchy. Travel through the pass is generally limited to large groups escorted by, at the minimum, one column of the Legion.